Harrow-tooth



(No Model.)

WINNE'K. Harrow Tooth.

' N 2 ,788. Patented July 6,1880.

' Fit 5 5 PATENT OFFICE.

FREDERICK e. WINNEK, on OSAGE, IOWA.

HARROW-TOOTH.

srncrrrcn'rroiv forming part of Letters Patent No. 229,788, dated July 6, 1880.

Application filed April 27, 1880. (No model.)

a flanged open-faced or slotted notched holder for the barrow-tooth, the said holder being applied to the bar so that it is adapted for adjustment thereon in the line of the bar over the shank of the clamping-bolt, to change the position of the tooth. The hollow or openfaced holder is formed with triple sets of notches adapted to receive the harrow-tooth, these notches being formed in lines at an angle to the bar, whereby the tooth will be held in the line of draft irrespective of its adjustment in said notches, as hereinafter described.

Referring to the accompanying drawings, Figure 1 represents the barrow-frame, showing the relation therewith of one of the toothholders; Figs. 2, 3, and 4, side views of the tooth and its holder, showing the tooth in different positions; Fig. 5, a section showing the tooth clamped to the beam; Fig. 6, a top view of the same, and Fig. 7 the flanged opennotched holder.

The diagonal bars A of an ordinary harrowframe are-set obliquely to the line of draft, as usual. 7

As the holders for maintaining the teeth in vertical or inclined planes are all of like construction, a description of one of the said holders will apply to all.

The holder B consistsof a hollow or slotted casting, 1), formed with a flange, b the open or slotted flat side of the casting being applied to one side of theh-arrow-bar, while the flanged part thereof rests upon the top of the bar. The holder is formed with an upper and a lower series of notches, c c, to receive the barrow-tooth G, which is held in place within the notches by means of an eyebolt or a hook upon one end of a-bolt, D. The stem of this bolt is passed laterally through the harrowbar, and upon its screw-threaded end is arranged a washer, d, and a nut, e, the latter being tightened up in order to maintain the tooth in rigid position within the notches of the holder, and also to clam the holder firmly upon the tooth-bar.

In order to vary the pitch of the harrowtooth, the nut' upon the bolt must be loosened so as to allow the hook or eye portion a of the bolt to be drawn out laterally from the bar to a distance'suflicient to enable the operator to transfer the tooth to different notches in the holder. In doing this the holder must necessarily be shifted in position upon the harrowbar, and this shifting will be readily effected, since, during the time in which the tooth is not held upon the holder, the said holder will be simply suspended upon the barrow-bar by its flange. V

. In the drawings the three positions of the tooth are illustrated. Fig. 3 shows the tooth in a vertical plane, and when all of the teeth are in this position they will act as ordinary straight harrow'teeth. The next position, Fig. 4, is aforward inclination of the tooth. When all of the teeth are in this position a deep-cutting harrow will be formed. The next position, Fig. 2, is a rearward inclination of the tooth. The teeth, being all in this position,

constitute barrow-teeth for smoothing down the ground and breaking up the clods of earth. In order to compensate for the divergence of the harrow-bars from the line of draft, the notches of the holders are formed in lines at such angles to the bar that no matter at which angle the tooth is shifted it will be held in the line of draft. Hence, if the teeth of the barrow are in vertical or inclined planes, they will always be in the line of draft. To effect such arrangement of the notches the holder is thickened toward one vertical edge, so that while the notches will be of equal depths they will be in lines oblique to the bar, as shown by the dotted line s in Fig. 6. I I am aware that prior to my invention harrow-teeth have been supported by clamping devices capable of adjusting the angle or position of the tooth on the beam for different kinds of work; and 1 do not claim, broadly, an adjustable barrow-tooth holder.

I claim- 1. The barrow-tooth holder consisting of the casting B, having the top flange, b, the top and bottom ranges of notches, c c c, and the 5 middle oblong opening, b, the said notches being on a plane inclined to the back crosswise of said holder, and adapted for use, as shown and specified.

2. The combination of the holder, consisting 10 of the casting B, having the top flange, b, the top and bottom ranges of notches, c c c, and the middle oblong opening, b, with the oblique harrow-bar A, the tooth C, and the clampingholt D, said holder being supported by and shifted horizontally upon its flange b to change I 5 the position of the tooth, and the said notches being formed to support the tooth in the line of draft, as shown and specified.

In testimony whereof I have hereunto set my hand in the presence of two subscribing wit- 2o nesses.

FREDERICK GIDEON WTNNEK.

Witnesses:

OTTO EDWARD SAUTER, JOHN B. CLELAND. 

